Abstract
In 2003, the Radioisotope Centre, (RC, POLATOM, Poland) submitted a sample of known activity of 60Co to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures. The value of the activity submitted was about 180 kBq.
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The result of this comparison has been approved for publication by Section II of the Consultative Committee for Ionizing Radiation (CCRI(II)), comparison identifier BIPM.RI(II)-K1.Co-60, according to the provisions of the Mutual Recognition Arrangement (MRA). It has been added to the matrix of degrees of equivalence that now contains 21 results.